97389894493 has 2 divisors, whose sum is σ = 97389894494. Its totient is φ = 97389894492.

The previous prime is 97389894463. The next prime is 97389894541. The reversal of 97389894493 is 39449898379.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63989773444 + 33400121049 = 252962^2 + 182757^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97389894493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97389894463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48694947246 + 48694947247.

It is an arithmetic number, because the mean of its divisors is an integer number (48694947247).

Almost surely, 2^97389894493 is an apocalyptic number.

It is an amenable number.

97389894493 is a deficient number, since it is larger than the sum of its proper divisors (1).

97389894493 is an equidigital number, since it uses as much as digits as its factorization.

97389894493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 423263232, while the sum is 73.

The spelling of 97389894493 in words is "ninety-seven billion, three hundred eighty-nine million, eight hundred ninety-four thousand, four hundred ninety-three".